PlatformBitmapLoaderTests.cs

using System;
using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Emit;
using System.Text;
using Xunit;

namespace Splat.Tests.Platform
{
    /// <summary>
    /// Unit tests for the platform specific Bitmap loader.
    /// </summary>
    public sealed class PlatformBitmapLoaderTests
    {
#if !NETSTANDARD
        /// <summary>
        /// Check to ensure an instance is returned.
        /// </summary>
        [Fact]
        public void Constructor_ReturnsInstance()
        {
            var instance = new Splat.PlatformBitmapLoader();
            Assert.NotNull(instance);
        }
#endif

#if ANDROID
        /// <summary>
        /// Checks to ensure a dynamic assembly behaves on android.
        /// </summary>
        /// <remarks>
        /// Introduced because of Splat #330.
        /// </remarks>
        [Fact]
        public void GetTypesFromAssembly_ReturnsResultsOnDynamicAssembly()
        {
            var name = new AssemblyName("SomeRandomDynamicAssembly");
            var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(
                name, AssemblyBuilderAccess.Run);

            // can't test with a logger, as it invokes the splat init, which puts the test in a false state as it will init the platform bitmap loader
            var drawableList = Splat.PlatformBitmapLoader.GetTypesFromAssembly(assemblyBuilder, null);
            Assert.NotNull(drawableList);
            Assert.Equal(0, drawableList.Length);
        }

        /// <summary>
        /// Checks to ensure a list of drawable items is returned.
        /// </summary>
        [Fact]
        public void GetDrawableList_ReturnsResults()
        {
            // can't test with a logger, as it invokes the splat init, which puts the test in a false state as it will init the platform bitmap loader
            var drawableList = Splat.PlatformBitmapLoader.GetDrawableList(null);
            Assert.NotNull(drawableList);
            Assert.True(drawableList.Count > 0);
        }
#endif
    }
}